Home / 1,039.52-1,428.58-1,010.36

Finding the Fourth Proportional to 1,039.52, 1,428.58 and 1,010.36

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Solution

The fourth proportional to 1,039.52, 1,428.58 and 1,010.36 is: 1,388.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.52 : 1,428.58 = 1,010.36 : x
  2. Step 2: Convert to fraction form
    1,039.52/1,428.58 = 1,010.36/x
  3. Step 3: Cross multiply
    1,039.52x = 1,428.58 × 1,010.36
  4. Step 4: Simplify right side
    1,039.52x = 1,443,380.09
  5. Step 5: Solve for x
    x = 1,443,380.09/1,039.52
  6. Step 6: Final answer
    x = 1,388.51

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.